3 wheel combination lock design User definable code Plastic covered light weight steel cable This USB (Universal Serial Bus) Combination lock uses a three digit wheel combination lock to securely protect your USB (Universal Serial Bus) devices. Perfect for use with USB (Universal Serial Bus) devices such as Pen Drives it prevents unauthorised access to devices & files meaning information can remain safely protected. It can also be used as a more traditional pad lock for securing other types of devices & equipment.